王旻宇

DescriptionFarmer John's cows have discovered that the clover growing along the ridge of the hill (which we can think of as a one-dimensional number line) in his field is particularly good. Fa

URL: http://poj.org/problem?id=2828

线段树子区间更新维护#include struct interval_tree{ int nums[100010]; struct Node{ long long mark, sum; } node[100010 << 2]; void build(int l, int r, int i) { if (l == r) {no

URL:http://poj.org/problem?id=3667DescriptionThe cows are journeying north to Thunder Bay in Canada to gain cultural enrichment and enjoy a vacation on the sunny shores of Lake Superior. Bes

URL:http://poj.org/problem?id=2528DescriptionThe citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all p